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-rw-r--r--src/nxt_conf_validation.c21
-rw-r--r--src/nxt_fs.h11
-rw-r--r--src/nxt_isolation.c67
-rw-r--r--src/nxt_main_process.c2
-rw-r--r--src/nxt_process.h17
5 files changed, 98 insertions, 20 deletions
diff --git a/src/nxt_conf_validation.c b/src/nxt_conf_validation.c
index 16ed87c6..9dd4f715 100644
--- a/src/nxt_conf_validation.c
+++ b/src/nxt_conf_validation.c
@@ -616,6 +616,21 @@ static nxt_conf_vldt_object_t nxt_conf_vldt_app_procmap_members[] = {
#endif
+#if (NXT_HAVE_ISOLATION_ROOTFS)
+
+static nxt_conf_vldt_object_t nxt_conf_vldt_app_automount_members[] = {
+ { nxt_string("language_deps"),
+ NXT_CONF_VLDT_BOOLEAN,
+ 0,
+ NULL,
+ NULL },
+
+ NXT_CONF_VLDT_END
+};
+
+#endif
+
+
static nxt_conf_vldt_object_t nxt_conf_vldt_app_isolation_members[] = {
{ nxt_string("namespaces"),
NXT_CONF_VLDT_OBJECT,
@@ -647,6 +662,12 @@ static nxt_conf_vldt_object_t nxt_conf_vldt_app_isolation_members[] = {
NULL,
NULL },
+ { nxt_string("automount"),
+ NXT_CONF_VLDT_OBJECT,
+ 0,
+ &nxt_conf_vldt_object,
+ (void *) &nxt_conf_vldt_app_automount_members },
+
#endif
#if (NXT_HAVE_PR_SET_NO_NEW_PRIVS)
diff --git a/src/nxt_fs.h b/src/nxt_fs.h
index 9f3266d8..bbd7ab9f 100644
--- a/src/nxt_fs.h
+++ b/src/nxt_fs.h
@@ -44,11 +44,12 @@
typedef struct {
- u_char *src;
- u_char *dst;
- u_char *fstype;
- nxt_int_t flags;
- u_char *data;
+ u_char *src;
+ u_char *dst;
+ u_char *fstype;
+ nxt_int_t flags;
+ u_char *data;
+ nxt_uint_t builtin; /* 1-bit */
} nxt_fs_mount_t;
diff --git a/src/nxt_isolation.c b/src/nxt_isolation.c
index 586c0368..a497b729 100644
--- a/src/nxt_isolation.c
+++ b/src/nxt_isolation.c
@@ -35,6 +35,8 @@ static nxt_int_t nxt_isolation_vldt_creds(nxt_task_t *task,
#if (NXT_HAVE_ISOLATION_ROOTFS)
static nxt_int_t nxt_isolation_set_rootfs(nxt_task_t *task,
nxt_conf_value_t *isolation, nxt_process_t *process);
+static nxt_int_t nxt_isolation_set_automount(nxt_task_t *task,
+ nxt_conf_value_t *isolation, nxt_process_t *process);
static nxt_int_t nxt_isolation_set_mounts(nxt_task_t *task,
nxt_process_t *process, nxt_str_t *app_type);
static nxt_int_t nxt_isolation_set_lang_mounts(nxt_task_t *task,
@@ -159,6 +161,12 @@ nxt_isolation_set(nxt_task_t *task, nxt_conf_value_t *isolation,
{
return NXT_ERROR;
}
+
+ if (nxt_slow_path(nxt_isolation_set_automount(task, isolation, process)
+ != NXT_OK))
+ {
+ return NXT_ERROR;
+ }
#endif
#if (NXT_HAVE_PR_SET_NO_NEW_PRIVS)
@@ -452,6 +460,32 @@ nxt_isolation_set_rootfs(nxt_task_t *task, nxt_conf_value_t *isolation,
static nxt_int_t
+nxt_isolation_set_automount(nxt_task_t *task, nxt_conf_value_t *isolation,
+ nxt_process_t *process)
+{
+ nxt_conf_value_t *conf, *value;
+ nxt_process_automount_t *automount;
+
+ static nxt_str_t automount_name = nxt_string("automount");
+ static nxt_str_t langdeps_name = nxt_string("language_deps");
+
+ automount = &process->isolation.automount;
+
+ automount->language_deps = 1;
+
+ conf = nxt_conf_get_object_member(isolation, &automount_name, NULL);
+ if (conf != NULL) {
+ value = nxt_conf_get_object_member(conf, &langdeps_name, NULL);
+ if (value != NULL) {
+ automount->language_deps = nxt_conf_get_boolean(value);
+ }
+ }
+
+ return NXT_OK;
+}
+
+
+static nxt_int_t
nxt_isolation_set_mounts(nxt_task_t *task, nxt_process_t *process,
nxt_str_t *app_type)
{
@@ -535,6 +569,7 @@ nxt_isolation_set_lang_mounts(nxt_task_t *task, nxt_process_t *process,
mnt->fstype = (u_char *) "tmpfs";
mnt->flags = NXT_MS_NOSUID | NXT_MS_NODEV | NXT_MS_NOEXEC | NXT_MS_RELATIME;
mnt->data = (u_char *) "size=1m,mode=777";
+ mnt->builtin = 1;
mnt->dst = nxt_mp_nget(mp, rootfs_len + nxt_length("/tmp") + 1);
if (nxt_slow_path(mnt->dst == NULL)) {
@@ -581,17 +616,23 @@ nxt_isolation_set_lang_mounts(nxt_task_t *task, nxt_process_t *process,
void
nxt_isolation_unmount_all(nxt_task_t *task, nxt_process_t *process)
{
- size_t i, n;
- nxt_array_t *mounts;
- nxt_fs_mount_t *mnt;
+ size_t i, n;
+ nxt_array_t *mounts;
+ nxt_fs_mount_t *mnt;
+ nxt_process_automount_t *automount;
nxt_debug(task, "unmount all (%s)", process->name);
+ automount = &process->isolation.automount;
mounts = process->isolation.mounts;
n = mounts->nelts;
mnt = mounts->elts;
for (i = 0; i < n; i++) {
+ if (mnt[i].builtin && !automount->language_deps) {
+ continue;
+ }
+
nxt_fs_unmount(mnt[i].dst);
}
}
@@ -600,13 +641,15 @@ nxt_isolation_unmount_all(nxt_task_t *task, nxt_process_t *process)
nxt_int_t
nxt_isolation_prepare_rootfs(nxt_task_t *task, nxt_process_t *process)
{
- size_t i, n;
- nxt_int_t ret;
- struct stat st;
- nxt_array_t *mounts;
- const u_char *dst;
- nxt_fs_mount_t *mnt;
-
+ size_t i, n;
+ nxt_int_t ret;
+ struct stat st;
+ nxt_array_t *mounts;
+ const u_char *dst;
+ nxt_fs_mount_t *mnt;
+ nxt_process_automount_t *automount;
+
+ automount = &process->isolation.automount;
mounts = process->isolation.mounts;
n = mounts->nelts;
@@ -615,6 +658,10 @@ nxt_isolation_prepare_rootfs(nxt_task_t *task, nxt_process_t *process)
for (i = 0; i < n; i++) {
dst = mnt[i].dst;
+ if (mnt[i].builtin && !automount->language_deps) {
+ continue;
+ }
+
if (nxt_slow_path(nxt_memcmp(mnt[i].fstype, "bind", 4) == 0
&& stat((const char *) mnt[i].src, &st) != 0))
{
diff --git a/src/nxt_main_process.c b/src/nxt_main_process.c
index a7b84b73..544a0cbd 100644
--- a/src/nxt_main_process.c
+++ b/src/nxt_main_process.c
@@ -1290,6 +1290,8 @@ nxt_main_port_modules_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
goto fail;
}
+ mnt->builtin = 1;
+
ret = nxt_conf_map_object(rt->mem_pool, value,
nxt_app_lang_mounts_map,
nxt_nitems(nxt_app_lang_mounts_map), mnt);
diff --git a/src/nxt_process.h b/src/nxt_process.h
index f2383687..d9b4dff1 100644
--- a/src/nxt_process.h
+++ b/src/nxt_process.h
@@ -72,18 +72,25 @@ typedef struct {
nxt_port_mmap_t *elts;
} nxt_port_mmaps_t;
+
+typedef struct {
+ uint8_t language_deps; /* 1-byte */
+} nxt_process_automount_t;
+
+
typedef struct {
- u_char *rootfs;
- nxt_array_t *mounts; /* of nxt_mount_t */
+ u_char *rootfs;
+ nxt_process_automount_t automount;
+ nxt_array_t *mounts; /* of nxt_mount_t */
- nxt_isolation_cleanup_t cleanup;
+ nxt_isolation_cleanup_t cleanup;
#if (NXT_HAVE_CLONE)
- nxt_clone_t clone;
+ nxt_clone_t clone;
#endif
#if (NXT_HAVE_PR_SET_NO_NEW_PRIVS)
- uint8_t new_privs; /* 1 bit */
+ uint8_t new_privs; /* 1 bit */
#endif
} nxt_process_isolation_t;
generated by cgit (git 2.34.1) at 2024-11-19 19:36:26 +0000